Electrical pulse counters – pulse dividers – or shift registers: c – Systems – Counter includes circuit for performing an arithmetic function
Patent
1992-07-24
1994-01-04
Sikes, William L.
Electrical pulse counters, pulse dividers, or shift registers: c
Systems
Counter includes circuit for performing an arithmetic function
377 15, 377 16, 377 17, G01D 534
Patent
active
052767221
ABSTRACT:
A precision, high-resolution, absolute, multi-revolution encoder which allows a multi-revolution position value of a shaft to be detected with high reliability, using only a single revolution detector, and makes multi-revolution detection indirectly related to the accuracy of a rotary angle position signal. The output signal from the single multi-revolution detector is used, together with an inverted output signal, to increment and decrement corresponding up/down counters, based on the direction of rotation of the shaft. Each of the up/down counters is incremented or decremented at different points or zones of the shaft rotation so that the rotational value can be determined unambiguously. A conventional grey-code detector provides accurate angle values. The counters may exist as discrete hardware or integrated software embodiments.
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patent: 5187724 (1993-02-01), Hibino et al.
Aoki Yukio
Mizutani Takao
Mitsubishi Denki K.K.
Ouellette Scott A.
Sikes William L.
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